The problem with being a refrigeration service contractor, sometimes, is that even when you just stop in for a six-pack, you are dealing with a customer.
The problems described here could have started on a cool autumn day during an on-duty service call to a drive-through convenience store in a northern state, where the refrigeration service contractor finds that a 1-hp compressor failed on one of the store's walk-ins that incorporate a K-body compressor.